How do you find the number of protons Neutrons and electrons in one atom of an element?

Answer 1

The number of protons is the same as the atomic number. For example... For the element Boron the atomic number is 5, so this would also be the number of Protons in this element. The number of electrons is the same as the number of protons. For example... For the element Boron the number of protons is 5, because that is the atomic number, so it is also thr number of electrons. This is so that the atom has an even charge between it's negative (elcectrons) and positive (protons) charges. To work out the number of neutrons you round the elements mass number to the nearest whole number. You then subtract the atomic number, from the rounded whole number, which gives you the new number of electrons. For example... For the element Boron has the mass number of 10.811. If you round that to the nearest whole number, you get 11. The atomic number of Boron is 5. You then subtract the atomic number (5) from the rounded mass number (11) which then gives you the number of neutrons found in that element. In this case if you subtract 5 from 11 toy are left with six, that is the number of nuetrons found in the element Boron. Tip- to find the atomic number and mass number, needed to find the number of protons, electrons, and neutrons, go to a site that will show you a Periodic Table- http://www.webelements.com/ click on the symbol of the elements name, and it will give you the mass and atomic number. Usually the mass number is located under the name and symbol, and the atomic number is usually located on top of the element's name and symbol, or in the top left hand corner. This was made by me, to me, from me..... I love me The number of protons is the same as the atomic number. For example... For the element Boron the atomic number is 5, so this would also be the number of Protons in this element. The number of electrons is the same as the number of protons. For example... For the element Boron the number of protons is 5, because that is the atomic number, so it is also thr number of electrons. This is so that the atom has an even charge between it's negative (elcectrons) and positive (protons) charges. To work out the number of neutrons you round the elements mass number to the nearest whole number. You then subtract the atomic number, from the rounded whole number, which gives you the new number of electrons. For example... For the element Boron has the mass number of 10.811. If you round that to the nearest whole number, you get 11. The atomic number of Boron is 5. You then subtract the atomic number (5) from the rounded mass number (11) which then gives you the number of neutrons found in that element. In this case if you subtract 5 from 11 toy are left with six, that is the number of nuetrons found in the element Boron. Tip- to find the atomic number and mass number, needed to find the number of protons, electrons, and neutrons, go to a site that will show you a periodic table- http://www.webelements.com/ click on the symbol of the elements name, and it will give you the mass and atomic number. Usually the mass number is located under the name and symbol, and the atomic number is usually located on top of the element's name and symbol, or in the top left hand corner. This was made by me, to me, from me..... I love me

Answer 2

When elements are written out, they are likely to be written as, for example, 2He4. The subscript 2 represents the number of protons in the element helium, which is its atomic number. In a periodic table of elements, finding the atomic number of an element will tell you how many protons it has.

In a stable atom, the amount of electrons will always match the number of protons because the atom must be neutral. In helium, the two protons are balanced with two electrons.

What follows won't help answer your question, but may help you better understand the atomic model. The superscript 4 is known as the Atomic Mass number of this particular element. In any element, it is the atomic mass number that describes how many protons and neutrons are present in an atom. We know that there are two protons in helium because of its atomic number, so it can be inferred that the two remaining particles are neutrons.

Answer 3

The number of protons is equal to the atomic number. For example hydrogen's atomic number is 1 therefore it has one proton in its nucleus. The amount of protons is always equal to the amount of protons in the atom if it's charge is neutral. For example hydrogen has 1 proton therefore it has 1 electron. To find the amount of neutrons you have to use the atomic mass. The atomic mass is the protons plus the neutrons.

Another way :) (by Drkgodzz)

To find the number of protons, electrons, and neutrons of an atom, you have to take the atomic number of the atom and subtract it from the atomic weight. If the atomic weight of the atom is a decimal, you should round it to the nearest tenth.

For Example:

Atom: Sulfur

Atomic Number: 16

Atomic Weight: 32.07

Round the Atomic Weight ( 32.07) to the nearest tenth (32).

Take 32 and subtract it from 16 and you will get 16.

So, the protons, neutrons, and electrons for Sulfur is...

Protons: 16

Neutrons: 16

Electrons: 16

I hope I helped you! :)

Answer 4

It's all on the periodic table. The number of electrons and protons of an atom is equal to its atomic number. (Potassium is #19, so it has 19 electrons and protons). The number of neutrons is the atomic mass minus the atomic number. (For potassium, 39 - 19 = 20, so it has 20 neutrons).

Answer 5

The first thing you will need to do is find some information about your element. Go to the Periodic Table of Elements and click on your element. Use the Table of Elements to find your element's atomic number and atomic weight. The atomic numberis the number located in the upper left corner and the atomic weight is the number located on the bottom. The atomic number is the number of protons in an atom of an element. By definition, atoms have no overall electrical charge. That means that there must be a balance between the positively charged protons and the negatively charged electrons. Atoms must have equal number of protons and electrons. To find the number of neutrons you must find is something called the mass number. Unfortunately, the mass number isn't listed on the Table of Elements. To find the mass number, all you need to do is round the atomic weight to the nearest whole number. But just remember:

For any element:

Number of Protons = Atomic Number

Number of Electrons = Number of Protons = Atomic Number

Number of Neutrons = Mass Number - Atomic Number

Answer 6

The number of protons in an element is given by the atomic number. The number of electrons is also given by the atomic number and is the same as the number of protons. The number of neutrons is the difference between the atomic number (number of protons) and the atomic mass. These definitions apply only to the elements appearing in the periodic table, and not to ions, or isotopes. In ions, the number of electrons will be different, and in isotopes, the number of neutrons will be different.

Answer 7

The number of protons in an atom is equal to its atomic number. Neutrons can be calculated by subtracting the atomic number from the atomic mass. Electrons are equal to the number of protons in a neutral atom.

Answer 8

Protons,neutrons and electrons was found in atom,and when atomes come together to form element

Answer 9

You need some 'heavy' electron equipment!!!! Only available in research institutions.

After that you will have to rely on data published by others.